Nut-lock.



G. H. LOUTREL.

NUT LOOK.

' APPLICATION FILED 1120.27, 1912.

1,065,149. 7 Patentd June 17,1913.

INVENTOR ATTORNEY UNITE STATES PATENT OFFICE.-

CYRUS H. LOUTREL, OF SOUTH ORANGE, NEW JERSEY, ASSIGNOR TO THE NATIONAL LOCK WASHER COMPANY OF NEWARK, NEW JERSEY, A CORPORATION OF NEW Specification of NUT-LOCK.

Letters latent. Patented June 17, 1913.

Application filed December 27, 1912. Serial No. 738,880.

To all whom it may concern:

Be it known that I, CYRUS H. LOUTREL, a citizen: of the United States,. residing at South Orange, county of Essex, State of New Jersey, have invented certain new and useful Improvements in Nut-Locks; and I do declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same.

My inventionhas reference to nut locks which are cut from a cylindrical coil of suitable metal and subsequently tempered.

The object of my invention is to greatly stiffen nut locks of this sort and to increase the resistance aflorded by the nut lock against the clamping elements, further objects being to enable the nut lock to seat more firmly against said elements as the latter are contracted and to cause the nut lock to bite with greater force into the surfaces of these elements.

With these ends in view, my invention consists in the peculiar and novel constructions hereinafter fully described and then particularly pointed out in the claims which conclude this description.

In the accompanying drawing Figure 1 is what I would term a front elevation of my improved nut lock, looking toward the severed ends-Fig 2 a rear elevation of such nut lockFig. 3 a side elevation of the nut lock.Fig. 4 a front elevation of the nut lock showing the same partially clamped- Fig. 5 a rear elevation of the nut lock partially clamped-Fig. 6 a side elevation of .such nut lock partially clamped, and Fig.

7 a plan view of the nut lock.

Similar numerals of reference denote like parts in the several figures of the drawing. After the nut locks havebeen cut from the cylindrical coil, they are in the form of plain spiral segments and are substantially mote from the ends, are curved gradually and laterally out of the line of the spiral;

be afforded by the nut locks both the end and intermediate portions are gradually curved laterally out of the line of the spiral. As such curved portions are straightened out by the action of the clamping elements, said portions will exert a greatly increased resistance against such elements. ually curving the intermediate portions of the nut lock laterally out of the line of the spiral and in alternate directions, the nut lock is made toseat with great stability between the clamping elements, and such lock -is thereby greatly stiffened because during the clamping action these curved portions will act as additional spring portions which, when straightened out by such clamping, will largely increase the resistance of the nut lock against said elements. I prefer to curve the intermediate portions of the nut lock gradually and laterally in reverse directions out of the line of the spiral, and in the drawing these curves on one side of the nut lock are designated by the numerals 3, 4, while the corresponding curves on the other side als 5, 6. When the extreme ends 1, 2, of the nut lock arecurved in the manner above described, these curved portions 3, 4, 5, and 6, are within the planes of the terminals of said ends as clearly shown at Figs. 1,2, and 3.

Referring to Figs. 4, *5, and 6, the surface against which the nut lock is clamped is designated by the numeral 7, while the numeral 8 designates the nut which is driven on the bolt 9 against such nut look. In these Figs. 4, 5, and 6, in which is illustrated my improved nut lock constructed for maximum resistance to the clampingvaction, said-nut lock is shown partially clamped between the there are three seating points on both faces of the nut lock, namely, the curved portions 1, 3, and 4, and the curved portions 2, 5, and 6, while between these curved portions parts are gradually curved laterally out of the line of the spiral that are designated respectively by the numerals 10, 11, on one face of the nut lock, and by the numerals 12, and 13, on the other face of such lock. These curved portions of thenut look all extend transversely of the segment and include the side faces and the edges, and, extending as they turbed, while the intermediate portions, re-

do laterally out of the line ofthe spiral of and in instances where great resistance must By grad- 4 of the nut lock are designated by the numerthe nut lock in opposite directions, form concave-convex compressible spring portions which must be straightened out before the nut lock is finally clamped between the elements 7 and 8 and therefore these porceedingly stable and firm during the final process of clamping.

In carrying out my invention the demands of the occasion govern the degree to Which the nut lock should be stifi'ened so as to afford a certain resistance to the action of the clamping elements.

I do not Wish to be limit-ed to any particular number of lateral gradual curvatures in the nut lock out of the line of the spiral, nor do I wish to be limited to the location of such curvatures so long as the latter comprise transverse portions includ ing the side faces and the edges and extend laterally outside the line of the spiral to form concavo-convexcompressible spring portions, since such number and location of these curvatures merely vary the resistance of the nut lock to the clamping elements.

Having thus described my invention What I claim as new and desire to secure by Letters Patent is 1. A nut lock consisting of a segment of a spiral coil having transverse portions, including the side faces and the edges and located remote from its ends, curved laterally into concavo-convex compressible spring portions of gradual curvature which extend out of the line of said spiral.

2. A nut lock consisting of a segment of a spiral coil Whose transverse extremities including the side faces and the edges are each gradually curved laterally out of the line of the spiral; a transverse part of said segment also including the side faces and the edges intermediate said extremities being also curved laterally out of the line of the spiral, said curved parts all forming concavo-convex compressible spring portions of gradual curvature.

In testimony whereof I affix my signature in presence of two Witnesses.

CYRUS H.-LOUTREL.

Vitnesses HAROLD T. Morrn'r'r,

J. E. WILSON. 

